KR101476190B1 - Methods of performing data communication in wireless communication system - Google Patents

Abstract

There is provided a method for performing data communication with a base station in a wireless communication system, the method comprising: transmitting uplink data to the base station using first channel resource allocation information among two or more channel resource allocation information Or receives a downlink data from the base station, and receives from the base station a channel resource change indicator instructing to change channel resources for data transmission or reception, and uses second channel resource allocation information of the two or more channel resource allocation information And transmits uplink data to the base station or receives downlink data from the base station. This can increase the efficiency of channel resources in the wireless communication system.

VoIP, talkspurt, silece period, scheduling, AMR

Description

[0001] The present invention relates to a method of performing data communication in a wireless communication system,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication system, and more particularly, to a method of transmitting and receiving data in a wireless communication system.

1 is a diagram illustrating a structure of a wireless access protocol for data transmission in a wireless section of a UMTS (Universal Mobile Telecommunication System) which is a third generation mobile communication system. The data link layer corresponding to Layer 2 (L2) of the Open System Interconnection (OSI) reference model includes a medium access control (MAC) layer, an RLC (Radio Link Control) layer, a PDCP Data Convergence Protocol) layer and BMC (Broadcast / Multicast Control) layer. The physical layer corresponds to a first layer (Layer 1). The exchange of information between the protocol layers is performed through a virtual access point called a Service Access Point (SAP), and corresponds to a part indicated by an ellipse in FIG. The unit of data transmitted between each layer is called a different name according to the layer and is called a service data unit (SDU), and a basic unit used by the protocol for transmitting data is referred to as a protocol data unit Data Unit (PDU). Hereinafter, data moving between the layers in the radio access protocol structure according to the present invention means a data block of a predetermined unit such as the above-described SDU or PDU.

The MAC layer is a layer for mapping between a logical channel and a transport channel. The MAC layer selects an appropriate transport channel to transmit data transmitted from the RLC layer, and adds necessary control information to the header of the MAC PDU. A special function performed by the MAC layer is a radio resource management function and a measurement function. The radio resource management function is a function of controlling data transmission by setting an operation of a MAC layer based on various MAC parameters transmitted from an RRC (Radio Resource Control) layer, which is a radio resource control layer, . A function of changing a mapping relationship between a logical channel and a transmission channel, or a function of multiplexing and transmitting data by a scheduling function. The measurement function measures the traffic volume of the terminal and reports it to the upper layer. In the upper layer, the setting of the MAC layer can be changed based on the information measured in the MAC layer of the UE, thereby enabling efficient management of the radio resources.

The RLC layer is located at the upper layer of the MAC layer and supports reliable transmission of data. Then, the RLC SDUs (Service Date Units) transmitted from the upper layer are segmented and concatenated in order to construct data of an appropriate size for the radio section. The receiving RLC layer supports data re-combining to recover the original RLC SDUs from the received RLC PDUs. Each RLC entity may operate in a Transparent Mode (TM), an Unacknowledged Mode (UM), and an Acknowledged Mode (AM) according to the RLC SDU processing and transmission scheme. have. When the RLC entity operates as a TM, it is transmitted to the MAC layer without adding any header information to the RLC SDU descending from the upper layer. UM, it is possible to configure RLC PDUs by segmenting / concatenating RLC SDUs, and header information including a serial number is attached to each RLC PDU. However, UM does not support retransmission of data. AM, the RLC PDU is configured by using the segmentation / connection function of the RLC SDU, and retransmission is possible when the packet transmission fails. Various parameters and parameters are used for the AM retransmission function such as transmit window, receive window, timer, and counter.

The PDCP layer is used only in the packet switching area and can compress and transmit the header of the IP packet so as to increase the transmission efficiency of the packet data in the wireless channel. In addition, a sequence number (Sequence Number) is managed to prevent loss of data in SRNC (Serving RNC) relocation.

The BMC layer broadcasts a cell broadcast message transmitted from the core network to a plurality of users through a common channel.

The physical layer as the first layer provides an information transfer service to an upper layer using a physical channel. The physical layer is connected to a medium access control layer (upper layer) through a transport channel, and data between the medium access control layer and the physical layer moves through the transport channel. Data is transferred between the different physical layers, that is, between the transmitting side and the receiving side physical layer through the physical channel.

The radio resource control (RRC) layer located at the bottom of the third layer is defined only in the control plane and is configured to perform a configuration of a radio bearer (RB) -configuration and release of the logical channel, the transport channel, and the physical channel. At this time, the RB means a service provided by the second layer for data transfer between the terminal and the network including the base station. The control plane refers to a hierarchical structure for transmitting control information in the vertical structure of the radio access protocol of FIG. 1, and the user plane refers to a hierarchical structure for transmitting user information such as data information transmission. Next, use of the voice call service using the wireless connection protocol of FIG. 1 will be described.

Voice data generated through a voice codec (codec) such as an AMR (Adaptive Multi-Rate) in a voice call has a special characteristic. That is, voice data is divided into two sections, a talk spurt and a silent period. The voice section refers to a voice data section generated while a person actually talks, and the silence section is a voice data section generated while a person does not speak. For example, a voice data block, which is a voice packet including voice data in a voice section, is generated every predetermined period (for example, every 20 ms), and a silence data block, which is a silence packet including voice data in a silence section, (For example every 160 ms). In order to use the voice service, radio resources for uplink and downlink must be allocated. In the radio resource allocation, the base station identifies necessary downlink resources by itself and transmits data on the downlink using the received downlink resources. In the case of the terminal, the base station allocates radio resources for uplink and downlink from the base station and transmits / do. Such radio resource allocation information (location of the corresponding frequency, time unit, etc.) is also referred to as scheduling information, and a method of allocating radio resources is also referred to as a scheduling method.

When a persistent scheduling scheme, which is a kind of scheduling scheme, is used for voice communication, the base station sets radio resources according to the voice interval. That is, the base station uses a characteristic that a voice data block is generated every first predetermined period (for example, every 20 ms in the following), and transmits a radio resource for transmitting / receiving uplink or downlink data to / Set in advance. The MS receives downlink data or transmits uplink data using preset radio resources every 20 ms. In this case, when the UE changes its state from the voice interval to the silent interval, since a silent data block is generated every second predetermined period (160 ms in the following example), a considerable number of radio resources allocated at 20 ms intervals are wasted do.

Similarly, if a base station pre-allocates radio resources to use a radio resource at intervals of 160 ms in accordance with a silence interval according to a continuous scheduling scheme, if the mobile station switches from a silence interval to a voice interval, There is a problem that a delay in transmission of voice information occurs due to a small amount of received resources.

There is a need for an efficient radio resource allocation scheme for a real-time streaming service of a data block having a constant size and periodicity such as VoIP as described above.

It is an object of the present invention to provide a method for performing data communication in a mobile communication system.

It is still another object of the present invention to provide a channel resource allocation method in a mobile communication system using one or more resource allocation information.

One aspect of the present invention discloses a method for a terminal to perform data communication with a base station in a wireless communication system. To this end, it is possible to transmit uplink data to the base station using the first channel resource allocation information among the two or more channel resource allocation information, to receive downlink data from the base station, and to change channel resources for data transmission or reception And transmits the uplink data to the base station or the downlink data from the base station using the second channel resource allocation information among the two or more channel resource allocation information.

Another aspect of the present invention discloses a method for a base station to perform data communication with a terminal in a wireless communication system. To this end, it is possible to transmit downlink data to the terminal or receive uplink data from the terminal using the first channel resource allocation information among two or more channel resource allocation information, and to change channel resources for data transmission or reception And transmits a channel resource change indicator for instructing to change the channel resource for data transmission or reception to the terminal when the change of the channel resource for data transmission or reception is required.

The following effects can be obtained through the data communication performing method using the channel resource change indicator in the wireless communication system according to the present invention.

First, it is possible to increase the efficiency of the mobile communication system by making the transmission of the radio resource allocation information to the terminal more quickly and diversely.

Second, optimal channel resources can be allocated to the UE according to the situation of the wireless communication system.

Hereinafter, the structure, operation and other features of the present invention will be readily understood by the embodiments of the present invention described with reference to the accompanying drawings. The following detailed description, together with the accompanying drawings, is intended to illustrate exemplary embodiments of the invention and is not intended to represent the only embodiments in which the invention may be practiced. The embodiments described below are examples applied to an evolved universal mobile telecommunications system (E-UMTS) in which the technical features of the present invention are also referred to as LTE (Long Term Evolution), and are similar to IEEE 802.16m, Wibro system It is obvious that the present invention can be applied to other mobile communication systems.

The E-UMTS system evolved from the existing WCDMA UMTS system and is currently undergoing basic standardization work in the 3rd Generation Partnership Project (3GPP). For details of the technical specifications of UMTS and E-UMTS, refer to Release 7, Release 8 and Release 9 of "3rd Generation Partnership Project (Technical Specification Group Radio Access Network)" respectively.

The following description can be applied to various communication systems including a method using multiple antennas.

Communication systems are widely deployed to provide various communication services such as voice, packet data, and the like. This technique can be used for a downlink or an uplink. The downlink means communication from the base station to the terminal, and the uplink means communication from the terminal to the base station. A base station generally includes a network excluding a terminal in a communication system including not only a physical transmission terminal but also an upper layer, which is a fixed point communicating with the terminal. Therefore, in the present invention, the network and the base station have the same meaning as a part symmetrical to the terminal. The terminal may be fixed or mobile. The present invention can be used in single carrier or multicarrier communication systems. Multicarrier systems can utilize Orthogonal Frequency Division Multiplexing (OFDM) or other multi-carrier modulation techniques.

As described above, in a mobile communication system, a subscriber station and a base station must share scheduling information for uplink transmission and downlink transmission and reception for voice service and data service. The scheduling information includes a terminal identifier or a group identifier (UE Id or Group Id) of terminals, a resource assignment and a duration of assignment of radio resources allocated for transmission of uplink and downlink data, Transmission parameters such as payload size, information related to MIMO (Multi Input Multi Output), HARQ process information, redundancy version, and new data indicator for new data recognition May be included. The MS receives the downlink scheduling information from the BS and receives the downlink data according to the received downlink scheduling information, and also receives the uplink scheduling information from the BS and transmits the uplink data accordingly.

In order to inform which UE the downlink scheduling information transmitted through a physical downlink control channel such as a Physical Downlink Control Channel (PDCCH) is for, a UE identifier (or group Identifier) is transmitted. The RNTI can be divided into a dedicated RNTI and a common RNTI. The dedicated RNTI is used for data transmission / reception to / from a terminal in which information is registered in the base station. The common RNTI is used for transmitting / receiving information commonly used by a plurality of terminals, such as system information, when communicating with terminals that have not been assigned the dedicated RNTI because the information is not registered in the base station. For example, RA-RNTI or T-C-RNTI used in a random access procedure through RACH (Random Access Channel) are examples of common RNTIs. The UE identifier or the group identifier may be transmitted in a form of being masked with an error detection code such as a cyclic redundancy code (CRC) to the downlink scheduling information transmitted through the PDCCH.

The UEs in a specific cell monitor the PDCCH through the first layer (L1) / second layer (L2) control channel using the RNTI information it owns, and if CRC decoding is successful in its RNTI, And receives downlink scheduling information. The UE receives downlink data transmitted to itself through a physical downlink shared channel (PDSCH) indicated by the received downlink scheduling information. Hereinafter, a scheduling method between a mobile station and a base station will be described.

The scheduling scheme can be classified into a dynamic scheduling scheme, a persistent scheduling scheme, and a semi-persistent scheduling scheme. The dynamic scheduling scheme is a scheme for transmitting scheduling information to the UE through a dedicated physical control channel such as DPCCH (Dedicated Physical Control Channel) whenever an uplink or downlink resource needs to be allocated for a specific UE. The persistent scheduling scheme refers to a scheme of statically allocating downlink or uplink scheduling information to a mobile station at the initial call setup time, for example, when setting up a radio bearer (RB). This scheme has the advantage of allocating as much resources as necessary but it causes speed and capacity degradation due to the signaling load between the terminal and the base station.

In case of the persistent scheduling scheme, the UE does not receive downlink scheduling information or uplink scheduling information from the base station whenever it transmits or receives data, and uses scheduling information previously allocated to the base station. For example, the base station transmits a transmission format (for example, transmission block size, modulation and coding scheme information) 'B' through a radio resource 'A' The terminal transmits the downlink data transmitted from the base station, which is transmitted from the base station, using the information 'A', 'B' and 'C' Lt; / RTI > Similarly, when the MS transmits data to the BS, it can transmit uplink data using a predetermined radio resource in accordance with the uplink scheduling information allocated in advance. The persistent scheduling scheme is a scheduling scheme in which traffic characteristics are optimized for regular services.

In the semi-persistent scheduling scheme, when a mobile station communicates with a network, it preliminarily determines a packet size and a period, and allocates radio resources permanently. Accordingly, the terminal requests the base station to transmit a radio resource required for transmission of the generated data according to the setting of the radio resource. The base station transmits a radio resource through the control signal according to the radio resource request from the terminal And the data is transmitted to the base station through the radio resource that has been pre-allocated and generated immediately without going through the allocation step. That is, when there is no change in packet generation, channel resource allocation is an effective channel resource allocation method for packet transmission having a certain size and periodicity because the packet generation is predicted in advance and channel resources are allocated.

In one embodiment of the present invention, a data communication method for uplink and downlink data transmission / reception in a terminal using one or more resource setting information in a semi-persistent scheduling scheme is proposed. The base station transmits control information including two or more channel resource allocation information to the UE in the uplink and downlink resources allocation in the semi-persistent scheduling scheme. The two or more channel resource allocation information for the uplink and the downlink may be informed to the terminal through the RB establishment process when the base station sets up the call. At this time, the Node B can inform the UE of the uplink and downlink channel resource allocation information to be used in the initial call setup. Or may inform the terminal of two or more channel resource allocation information changed by using a dedicated channel to a specific terminal even during a call. If channel reconfiguration of a call is required due to a procedure such as a handover, if channel resource allocation information is received from a base station of a new cell, two or more new channel resource allocation information And informs the terminal.

It may be necessary to change the channel resource allocation information of the uplink currently used by the UE during the call. For example, in the case of voice call service, this corresponds to the case of switching from the call interval to the silence interval. In this case, the UE may transmit control information indicating the necessity of changing the channel ZN allocation to the Node B or the Node B may measure a change amount of the uplink data transmission amount from the UE and recognize the necessity of changing the channel resource allocation of the uplink transmission And transmits a channel resource modification indicator (CRMI) to inform the UE of channel resource change.

The UE transmits channel resource allocation information for uplink data transmission using the channel resource setting information indicated by the channel resource change indicator transmitted from the base station among two or more channel resource setting information acquired from the base station through the RB setting process, Or recognizes the necessity of changing the channel resource allocation for uplink data transmission and can change the channel resource allocation by selecting an appropriate one of the two or more channel resource setting information previously received through the RB setting process or the like. Alternatively, the UE can change a channel resource allocation for downlink data reception from a base station by receiving a channel resource change indicator indicating a change in channel resources for downlink data reception transmitted from the base station.

The channel resource change indicator indicates a change to a channel resource allocation to be used in at least one of a specific uplink or downlink among information related to two or more channel resource allocations shared by a Node B and a UE. This can be used as a scheme of arranging two or more channel resource allocation information in a specific order, attaching a serial number in the order, assigning the serial number to the channel resource change indicator, and transmitting the serial number to the terminal. The channel resource change indicator may be transmitted from the base station to the terminal using the control channel in the physical layer. Or the channel resource change indicator may be transmitted from the base station to the terminal via the control information in the MAC PDU such as a MAC control element.

Another embodiment of the present invention proposes a downlink and uplink data transmission / reception method in a base station using one or more channel resource setting information in a semi-persistent scheduling scheme. Since the base station can allocate channel resources for communication with the UE by itself, the BS can allocate as much uplink and downlink channel resources as needed, and can establish uplink or downlink Two or more channel resource allocation information used for transmission can be shared with each other.

The base station first transmits two or more channel resource allocation information to the mobile station. The one or more channel resource allocation information may be transmitted to the UE through the RB configuration in the call setup process. At this time, channel resource allocation information for the initial downlink transmission and the initial uplink transmission may be transmitted to the terminal or may be transmitted after a predetermined time elapses. The base station can transmit downlink data to the mobile station or receive uplink data from the mobile station.

In this way, it may be necessary to change channel resources required for at least one of uplink and downlink transmission after downlink and uplink communications are performed between the base station and the terminal using the initial channel resource allocation information. Therefore, the base station determines the necessity of changing the channel resource for uplink or downlink transmission. The necessity of changing the channel resource can be recognized by the base station analyzing the size change of the downlink data transmitted from the core network and the change of the channel resource allocation necessary for the downlink transmission. Alternatively, the base station may recognize the necessity of changing the uplink channel resource by receiving the control information indicating that it is necessary to change the channel resource required for the uplink transmission from the terminal, or the base station itself may recognize the change of the uplink data transmission amount from the terminal, The necessity of changing the resource can be recognized.

In order to make a change to the required channel resource allocation, the base station transmits to the terminal a channel resource change indicator indicating allocation of channel resources required for uplink or downlink transmission among the two or more channel resource allocation information, And performs downlink data transmission or uplink data reception using channel resource allocation information indicated by the channel resource change indicator. That is, the base station then performs downlink transmission to the terminal using the channel resource corresponding to the channel resource allocation information indicated by the channel resource change indicator, and the terminal receives the channel resource allocation information. Or the base station receives the uplink data from the terminal as a channel resource corresponding to the uplink channel resource allocation information indicated by the channel resource change indicator.

Another embodiment of the present invention proposes a method of performing data communication using one or more channel resource setting information in VoIP.

Voice over IP (VoIP) is a service for transmitting voice data through an Internet Protocol (IP), and is a method for providing voice data in a packet switched (PS) area in the conventional circuit switched (CS) area. The advantage of VoIP in contrast to CS-based voice services is that while CS-based voice services transmit data while maintaining end-to-end connection, VoIP does not maintain connectivity connection-less data, so network resources can be used very efficiently. As the communication develops, user data is increasing very rapidly. Therefore, in order to use network resources efficiently, existing CS-based services are being replaced by PS-based services. VoIP was also developed in this context.

VoIP has an advantage that it can efficiently use network resources, but has a disadvantage in that quality of service (QoS) is lower than that of a conventional CS-based voice service. There are many factors that affect QoS, but delay, delay jitter, and FER (Frame Error Rate) are typical examples. In the early stage of VoIP development, this QoS was much lower than that of CS-based voice service. However, as a result of many researches, VoIP in the wired section is guaranteed almost equal QoS with CS-based voice service. Specifically, RTP (Real-time Transport Protocol), which can provide PS based voice service very effectively, has been developed, and RTCP (RTP Control Protocol) has been developed which serves as feedback for transmission of RTP packets. RTP is able to solve the delay variation problem by loading time stamp on every packet. RTCP reports the loss of RTP packet so that RTP source can perform rate control, . In addition to RTP / RTCP, Session Initiation Protocol (SIP) and Session Description Protocol (SDP) have also been developed to maintain virtual connections at end-to-end, substantially eliminating latency issues.

However, unlike VoIP in the wired section, VoIP in the wireless section does not have satisfactory QoS due to the above techniques. Therefore, ROHC (Robust Header Compression), an improved header compression technique, is developed and used to increase the transmission efficiency of VoIP in the wireless section have. However, since RTP is a real-time user data, it is relatively insensitive to errors but sensitive to delay and delay fluctuations. On the other hand, RTCP is sensitive to errors but relatively insensitive to delay and delay fluctuations. Also, because RTP carries voice data, small size packets are regularly transmitted regularly, whereas RTCP is control data, so its size is much larger than RTP, transmission frequency is low, and it is transmitted irregularly. In this embodiment, a method of performing data communication using one or more channel resource allocation information proposed by the present invention as an example for solving the above-described delay problem in a wireless VoIP service will be described.

2 shows an example of a traffic model in a voice call service to which AMR (Adaptive multi-rate) is applied in a mobile communication system. FIG. 2 illustrates a case where a 12.2 kbps AMR is applied to a voice data block having a size of 35 to 49 bytes in a predetermined first period (20 ms period in FIG. 2) and a predetermined second period 2, a silent data block having a size of 10 to 24 bytes is generated at a cycle of 160 ms). Because of the irregular nature of voice calls, it is difficult to predict the start and end of a call interval.

3 is a flowchart illustrating a method of performing a data communication using a channel resource change indicator proposed in an embodiment of the present invention. The embodiment of FIG. 3 is an example in which the present invention is applied to a method of performing data communication between a terminal and a base station during a voice call using the semi-persistent scheduling method and using the AMR scheme.

Referring to FIG. 3, the UE sets up a radio bearer (RB) with the BS after entering the network [S300]. In order to apply the semi - persistent scheduling scheme in the radio bearer setup process, the BS transmits uplink scheduling information and downlink scheduling information to the UE.

Each of the uplink scheduling information and the downlink scheduling information may include one or more channel resource allocation information. Each of the downlink scheduling information and the uplink scheduling information transmitted in the radio bearer setup process may include channel resource allocation information used by the base station and the UE for the downlink transmission / reception and uplink transmission / reception for the first time.

 The UE transmits data generated at the time of voice communication using the channel resource allocation information included in the uplink scheduling information to the Node B, and transmits, to the Node B using the channel resource allocation information included in the downlink scheduling information, And receive downlink data to be transmitted. The uplink scheduling information and the downlink scheduling information may further include information related to a data transmission / reception period in a talk spurt, a data transmission / reception period in a silent period, etc., in addition to conventional scheduling information according to the related art . When the AMR scheme is applied, the lengths of the call interval and the silence interval in the voice service may be different depending on the AMR mode, and thus the required resource allocation amount may be different. In an exemplary embodiment of the present invention, one or more transmission periods may be allocated to each of a call interval and a silence period.

Table 1 shows a channel resource allocation table showing allocation of a channel resource allocation scheme according to a voice service interval in each AMR mode when a voice call having N AMR modes has one transmission period and one silence interval . That is, the information on the necessary channel resource allocation is mapped on a one-to-one basis in advance for each of the call interval and the silence interval for each AMR mode, and the channel resource allocation indicator (CRMI) Indicates what channel resources to use in future. For example, if the uplink of the current MS transitions from the AMR mode 2 to the silent period of the AMR mode 2, the BS recognizes the uplink and then sets the CRMI to 1 to transmit to the MS, .

Currency section Silent section AMR mode 1 CRMI = 0 CRMI = 1 AMR mode 2 CRMI = 0 CRMI = 1 ... ... ... AMR mode N CRMI = 0 CRMI = 1

The terminal and the base station can share control information including one or more channel resource allocation information corresponding to Table 1 and information on what channel resource allocation is to be allocated for each channel resource allocation even during a call connection after the RB setting step . This is because when the UE enters another cell due to handover and receives one or more channel resource allocation information from the base station of the other cell and the new base station and the UE share the new channel resource allocation information . Alternatively, the terminal may store one or more channel resource allocation information that can be used in advance in the terminal through a hardware download process or the like, and use the channel resource allocation information fixedly.

Table 2 shows a channel resource change indicator indicating a change to a channel resource allocation scheme according to a voice call interval in each AMR mode when a call interval has two or more transmission periods in a voice call having N AMR modes Allocation table. The silence interval can also be allocated as shown in Table 2.

Currency section First cycle  Second cycle  ...  Nth cycle AMR 1 CRMI = 0 CRMI = 1  ... CRMI = N AMR 2 CRMI = 0 CRMI = 1  ... CRMI = N  ... ... ...  ... ... AMR N CRMI = 0 CRMI = 1  ... CRMI = N

As shown in Table 1, the UE and the BS can share the information of Table 2 and the specific channel resource allocation information.

As described above, when the UE enters a call interval, the UE uses uplink channel resource allocation information in the uplink scheduling information received from the base station to transmit uplink data on voice data generated in a voice call process to data in a call interval And periodically transmits it to the base station according to the transmission period [S310a to S310n].

The terminal then switches to the silence interval when it is necessary to switch to the silence interval [S320]. At this time, the terminal can transmit the control information indicating the switch to the silence period on the uplink. Alternatively, the base station may itself analyze the uplink data from the terminal (e.g., noticeably changing the size of the voice data block) and recognize the switch to the silence period.

When the base station recognizes the switch to the silent period of the terminal, the base station transmits a channel resource change indicator indicating the channel resource allocation information of the silent interval of the AMR mode of the terminal to the terminal (S325). Alternatively, if the UE recognizes that the UE has entered the silence period, the UE allocates channel resources suitable for the silence period of the current AMR mode from two or more channel resource allocation information received through the RB setup process (S300) Link data transmission, and at the same time, transmit a channel resource change indicator corresponding to the channel resource of the uplink data to the base station.

Thereafter, when the UE enters the silence period, it transmits periodic silence data to the BS according to the data transmission period in the silence interval using the uplink channel resource allocation information received from the BS [S330a to S330n]. If it is necessary to switch to the call interval in the silent interval, the call interval is switched again through the steps of [S320] to [S330a to S330n].

The related parameters in the RB configuration for setting semi-persistent radio allocation according to the semi-persistent scheduling scheme in the embodiment of FIG. 3 can be transmitted to the mobile station via the RRC message.

The channel resource change indicator received from the base station can be directly transmitted to the MS on the physical control channel as a physical downlink control channel (PDCCH) in the physical layer, Lt; RTI ID = 0.0 > MAC < / RTI >

Although the above description has been made in order to facilitate the description of the present invention and the embodiments thereof, the transmission side may be a base station of a terminal or a network, and the always receiving side may be a base station or a terminal of the network have. The terms used in this document may be replaced by other terms having the same meaning. For example, the terminal may be replaced with a mobile station, a mobile terminal, a communication terminal, a user equipment or a device, and the base station may be replaced with a term such as a fixed station, a Node B (NB), or an eNB.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Accordingly, the above description should not be construed in a limiting sense in all respects and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

1 is a diagram illustrating a structure of a wireless access protocol for data transmission in a wireless section of a UMTS (Universal Mobile Telecommunication System) which is a third generation mobile communication system.

2 shows an example of a traffic model in a voice call service to which AMR (Adaptive multi-rate) is applied in a mobile communication system.

3 is a flowchart illustrating a data transmission method using a channel resource change indicator proposed in an embodiment of the present invention.

Claims (11)

A method for a terminal to perform data communication with a base station in a wireless communication system, Receiving at least two channel resource allocation information from the base station; Allocating channel resources based on the first channel resource allocation information among the two or more channel resource allocation information; Transmitting uplink data using the allocated channel resources; Determining whether to change channel resources for transmission of data; And And transmitting uplink data to the base station using second channel resource allocation information among the two or more channel resource allocation information, Wherein the step of transmitting uplink data to the base station using the second channel resource allocation information comprises transmitting a channel resource change indicator for instructing a change of channel resources for transmission of the data, . delete The method according to claim 1, Wherein the at least two channel resource allocation information is received from the base station in at least one of a call setup process and a call setup process. The method according to claim 1, Wherein the first channel resource allocation information is related to a channel resource for transmitting the uplink data in a talkspurt at the time of voice communication. 5. The method of claim 4, Wherein the second channel resource allocation information is related to a channel resource for transmitting the uplink data in a silence period during voice communication. delete delete delete delete delete delete

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